Results 51 to 60 of about 10,677 (209)

ELemental abundances of Planets and brown dwarfs Imaged around Stars (ELPIS). I. Potential Metal Enrichment of the Exoplanet AF Lep b and a Novel Retrieval Approach for Cloudy Self-luminous Atmospheres

The Astronomical Journal, 2023
AF Lep A+b is a remarkable planetary system hosting a gas-giant planet that has the lowest dynamical mass among directly imaged exoplanets. We present an in-depth analysis of the atmospheric composition of the star and planet to probe the planet’s ...
Zhoujian Zhang, Paul Mollière, Keith Hawkins, Catherine Manea, Jonathan J. Fortney, Caroline V. Morley, Andrew Skemer, Mark S. Marley, Brendan P. Bowler, Aarynn L. Carter, Kyle Franson, Zachary G. Maas, Christopher Sneden   +12 more
doaj   +1 more source

Planetesimal-driven planet migration in the presence of a gas disk

, 2010
We report here on an extension of a previous study by Kirsh et al. (2009) of planetesimal-driven migration using our N-body code SyMBA (Duncan et al., 1998). The previous work focused on the case of a single planet of mass Mem, immersed in a planetesimal
Adachi, Brasser, Chiang, Christopher C. Capobianco, Cuzzi, Dohnanyi, Duncan, Fernandez, Goldreich, Gomes, Haisch, Harold F. Levison, Hayashi, Hubickyj, Ida, Inaba, Kary, Kirsh, Kokubo, Korycansky, Levison, Lyra, Malhotra, Martin Duncan, Masset, Mizuno, Paardekooper, Paardekooper, Paardekooper, Papaloizou, Pollack, Rafikov, Sousa, Thommes, Udry, Ward, Ward, Wetherill, Wisdom   +38 more
core   +1 more source

On the filtering and processing of dust by planetesimals 1. Derivation of collision probabilities for non-drifting planetesimals [PDF]

, 2013
Context. Circumstellar disks are known to contain a significant mass in dust ranging from micron to centimeter size. Meteorites are evidence that individual grains of those sizes were collected and assembled into planetesimals in the young solar system ...
Guillot, Tristan, Ida, Shigeru, Ormel, Chris W.   +2 more
core   +2 more sources

Birth and Decline of Magma Oceans in Planetesimals: 2. Structure and Thermal History of Early Accreted Small Planetary Bodies [PDF]

, 2022
Cyril Sturtz, Angela Limare, S. Tait, É. Kaminski   +3 more
openalex   +1 more source

Felsic Magmatism on Venus Generated by Crustal Recycling and Melting

Journal of Geophysical Research: Planets, Volume 130, Issue 11, November 2025.
Abstract The observation of low viscosity lava flows and shield volcanoes on radar images, combined with X‐ray fluorescence analyses performed by Soviet landers, strongly suggests that Venus's crust is primarily basaltic. However, near‐infrared emissivity data from the Galileo and Venus Express missions indicate that crustal plateaus may be ...
Max Collinet, Julia Maia, Ana‐Catalina Plesa, Stephan Klemme, Mark Wieczorek   +4 more
wiley   +1 more source

A quantification of hydrodynamical effects on protoplanetary dust growth

, 2013
Context. The growth process of dust particles in protoplanetary disks can be modeled via numerical dust coagulation codes. In this approach, physical effects that dominate the dust growth process often must be implemented in a parameterized form.
Dullemond, C. P., Ramsey, J. P., Sellentin, E., Windmark, F.   +3 more
core   +1 more source

Using Venus, Earth, and Mars to Understand Exoplanet Volatile and Climate Evolution

Journal of Geophysical Research: Planets, Volume 130, Issue 10, October 2025.
Abstract Venus, Earth, and Mars exhibit a wide range of interactions between their deep interiors, surfaces, lower and upper atmospheres, and the Sun, with commensurate variations in the nature of their atmospheres and evolution of their volatiles. By examining these worlds' characteristics and behavior, we can gain some understanding of the breadth of
Bruce M. Jakosky, Paul K. Byrne
wiley   +1 more source

Formation of Multiple Dynamical Classes in the Kuiper Belt via Disk Dissipation

The Astrophysical Journal
Planetesimal formation likely lasted for millions of years in the solar nebula, and the cold classicals in the Kuiper Belt are suggested to be the direct products of streaming instability.
Tommy Chi Ho Lau, Til Birnstiel, Sebastian M. Stammler, Joanna Drążkowska   +3 more
doaj   +1 more source

Planetesimal Formation in Magnetorotationally Dead Zones: Critical Dependence on the Net Vertical Magnetic Flux

, 2012
Turbulence driven by magnetorotational instability (MRI) affects planetesimal formation by inducing diffusion and collisional fragmentation of dust particles.
Bai, Bai, Bai, Bai, Chiang, Ciesla, Cuzzi, Hirose, Ida, Igea, Lubow, Machida, Okuzumi, Okuzumi, Okuzumi, Rothstein, Sano, Sano, Suzuki, Takeuchi, Turner, Turner, Turner, Umebayashi, Wada, Weidenschilling, Weidenschilling, Youdin   +27 more
core   +1 more source

Accumulation of Dust on a Surface and the Subsequent Formation of Compact Aggregate Piles

Journal of Geophysical Research: Planets, Volume 130, Issue 10, October 2025.
Abstract Dust aggregation is a prominent topic in space physics, yet the accumulation of dust on surfaces in airless environments remains poorly understood. It is commonly assumed that, during the initial stages of dust deposition, particles spread uniformly to form a monolayer.
G. Griffin, J. Martinez, P. Adamson, L. Matthews, T. W. Hyde   +4 more
wiley   +1 more source